Paper bag and the like



Nov. 9, 1943. J. D. ERRECABORDE PAPER BAG AND THE LIKE 2 Sheets-Sheet 1 Filed Jan. 5, 1942 J D.Errecaborde,

v1 WHV, nnwx m f max! J N IM M fix b K v [x l Q m x N i Nov. 9, 1943. J. D. ERRECABORDE PAPER BAG AND THE LIKE Filed Jan. 5, 1942 2 Sheets-Sheet 2 m m .N m .J.

Patented Nov. 9, 1943 .1056 Daniel Errecaborde, Buenos Aires,

Argentina Apmaaanemm 5, 1942,- Serial No. 425,5a9.

1 Claim. (c1. 229*6235) This invention relates to improvements in .paper bags and the like, for sacking pulverulent or granularxgoodsin general, andan essential object of the invention is .topr'ovide bags of said .kind with vcertain :novel structural improvements which will assure a ,perfectlytight seal of the same. a

The improvements which form the object of this invention may be applied -:to bags'forme'd by two or more superposed sheets or layersof paper J or similar'materi'aland consist inproviding one or more of the layers which :form the internal dining or layer of thegbag, (with afsuitablevalve means, made integral with the body of thesame and adapted :to be obturated 'by'a tubular-valve, also iormedintegral-with the aforesaid elements, and providing, in turn oonesor more "of the layers which form the outer dining ,or cover :of the bag, with a flap, also integral with said latter layers .andidesigned to be applied; or aflixecl by cementing .or iotherwise to: the mouth of i said. tubular valve, so as to obtaima perfectly tight seal of the-bag and thereby assure theindefinite keeping of the product contained in the bag.

n This, latter particular "feature allows of. conven iently using anoveltype-of bag for sacking grain and similar goods, s'inicethe. tight sealwof the bag not only prevents the contents from becoming infested with weevils, moths or other ,parantes, but also assures "the destruction, by asphyxia, 'of any insects liable to get into the grain while being bagged.

Arurtneradvanta e of importance of the novel type 'of bag in accordance with "this invention consists in that the sealing flap or "the tubular valve means also op'eratesto effectively prevent the contents "of the bags irom b'ein'g tampered with. e

The invention also fvi'ews other objects which Will become apparent from a consideration of the following specification.

In order that this invention may clearly be understood and readily married into practice, a preferred-embodiment of the same has been shown by 'way- -of example in the illustrative drawings annexed to this specification. In said "drawings:

Figure -1 shows an upper'plan view of a blank designed to 'form the internal layers or lining of the improved type "of bag, providedto that end with the necessary elements for forming the corresponding tubular valve means, of one single piece, in accordarrcewith this invention.

Figure 2 illustrates the mannerof-assenrbling the:i-n'ternal body pa-rt or lining of {the bag and the respective tubular valve means.

F-ig'ure '3 is a pa-r tiall :detail which illustrates the position assiime'd by 1 the tubular valve when filling or emptying the bag.

Figure l is a diagrammatic "detail which illustrates the position assumedxbvrthe internal-body or lining of the-bag afterthe tubu ar valyehas been .-submitted to .a first ifo ne' st p in.@an in:

ward direction. 1 5 Fi re 5 shows an llnpe wnlan. vi w ofthe blankv for, forming the; external? layers or cover-- ing p rteof. the nove ype @ofb s, d pf he flaps which are-to form-the tight seal-of the tubular valve means.

Figure '6' is a detail view which shows the position assumed :by the-sealing flap when applied on the mouthor entranceopening ofthe tubular valve.

, Figure? illustrates another diagrammatic ,de-

' l5 tail of .the position assumed by the inteignal body part or lining f the (bag-after ,the tubular valve means has totally been folded inwards, and,

Figure 8 shows the improved bagafter sealing, rea y for storage or transport,

In; all the said f gures, the samewniimbers .of reference havembeenl-used itorindicate likeorcorresponding :parts. 7

In the embodiment described and, shown, it has been assumed that; the v:bag in accordance with this invention consists of an internal lining or layer of paper .or similar material, and .an

outer layer or cover, also of paper or the like, designed to fit or apply by superpositionpn the ,former layer, so as to .form one single body although, as abovestated, thenumber of elements used to form oneor both of. said layersmay vary in accordance with the conditions required for strengthening the bag oradapt the same to any particular conditions of use.

In Figures 1 .to 4 and v7 are shown the several elements which form theinternallayeror lining; in the form of construction illustrated in, the drawings, said elements, substantially consistof a sheetA of paperor similar suitable material, 40 of rectangular shape, in which a number of felds or weakening jcrease's "l are formed,,arranged'longitudinally with regard to said sheet, so as to form the contour of the rectangular sides "2 and ,3; from the upper and lower edges of either sides or surfaces 2 "and 3, small flaps s and 5',

respectively, extend, iad'apted'to fold along the weakening creases 6, formed" in a iongi-tudinai direction at theup-per and lower margins of said surfaces.

'50 "With reference to Figure lit-will also be seen that from the upper edgeof two ='0f the surfaces 3 and part of the surface 2, an extension *B -extends, substantially of rectangular shape in which areformed weakenin 'fol'ds or creasesl, one of which is arranged to cor-respond with one of the weakening creases first referred to, and another transversa-l folding or weakening --crease *8, so that onsaid extension B, the rectangular spout surfaces 9 and wings 1'0, and the-trapa zoidal surfaces it wili he termed, of which the two latter are separated from the Surfaces 2 by two folding lines or weakening creases l2 which converge in an oblique direction toward a suitable point on the central line I.

From the lower edge of one ofthe surfaces It extends a flap l3, adapted to be folded along a weakening crease l4, while from one of the lateral margin of one of the surfaces 3, another flap l extends, adapted to fold along one of the longitudinal weakening creases I. r In Figures 5, 6 and 8, the elements designed to form the outer layers or cover of the bag are shown; in the form of construction represented, said elements consist of a sheet C, also of paper or similar material and of a shape and dimensions adapted to those of the sheet A, first above described. Said sheet 'A is also provided with weakening lines I which form the surfaces '2 and 3', and the lateral flap l5 and the other flaps 4' and 5', adapted to fold along the folding creases 6, said lines, flaps and surfaces being so arranged as to enable the same to exactly correspond, by superposition, with the similar elements of said sheet or blank A.-' 7

With reference to the'drawings it will further be seen that from the upper edge of the surfaces 3',an extension D projects,'of substantially t'rapezoidal shape, separated from the former byytwo "converging weakening creases l6, and'onsaid surface two more converging folds are provided whichcontour-a central surface ll, of triangular shape, and two lateral fiaps l8.

For assembling this type of bag, one orseveral of the sheets or layers A-are placed in superposition with one Or several of the sheets or layers C, so as to cause the elements I, 2', 3,4, 5 6 and I5 of the former to coincide with'the similar elements ,of the latter.

With the parts in this position, the sheets A and B are folded, respectively, along the longitudinal margins I and I, so that the pairs 'of blanks will have their faces 3 and 3 collapsed in'an inward direction, after which the flaps 4, 4' and 5, 5' and the external flaps l5 and i5 are affixed, by cementing or otherwise, to the internal surface of the opposite sides or faces.

The upper extension B of the sheet'A is-folded along the weakening lines 8, as indicated in, Figures 2 and 3, so that the surfaces 9 and the flaps rectangular inner lining; a, substantially rectanular outer casing enveloping saidinner lining,

ID will project outside from the bag and "assume a sheathing position so as to form a tubular member which extends into the bag and constitutes. a tubular valve, properly; after this, the -flap I3 is folded against said body part, in the manner shown in detail in Figure 3. .With the parts being placed in this position, the 'bagwill be readyfor being filled with grain or other goods to be sacked, which after due'disinfection or'ventilation are' fed in by the outer part-of the valve element formed, as above stated, by the surfaces 9 and flaps l0. When the bag has been filled, said valve is folded successively along a transversal crease indicated by the dot and-Clash line [9 and then folded obliquely, as indicated in detail respectively in Figures 1 and 4 and thereupon the thus folded end of saidtubular element is inserted into the space formedbetweemthe surfaces N], whereby the seal will have duly been established, in such a manner as torender the same invisible from outside, as indicated by detail in Figure 7.. In this position, the extension D of the sheets C is applied to the openingl'thus formed, so that the central surface H ,of:said extension will be placed opposite to said opening,

whereupon the flaps l8 are secured by cementing or otherwise, to the lateral and outer surfaces of the bag, as may be seen by reference to Figure 8. This being done, the bag will be effectively and tightly sealed.

From the foregoing description it will have been understood that the conditions of safety 0f the seal obtained by the folding Of the tubular valve "and the operation of the extension D, in combination with the impermeability of the paper used in the'manufacture of the bag, will set about within the same a condition of absolute tightness, thus allowing of the convenient keeping of the grain or other product contained in the bag, for any desired length of time.

Besides this important advantage, this'novel type of bag allows of efficiently isolating the product'contained therein; from any atmospheric agents, thereby. preventing the contamin'ationof the contents byimpurities liable to filter through the meshes of'hessianbags, or carried bythe grain handled in bulk, and the consequent infectionof certain kinds of grain which frequently arrive at the port oflfdestiny in badly fermented conditions; I"

From the foregoing, the nature of this invention will have" clearly been understood-*and no further details will be requiredbyltliose skilled in'the arty z .1 It will beevident'that several modifications-of construction and detail may be introduced without departing from the :scope of this invention,

as clearly'setforth in-the claiming clauses hereto ann'exedJ- I m L 4/ ters Patentisi v 7v A-bag, or the like, comprising, a substantially that what'I claim: and desire to-secure byfhet said lining and-casing each'having inwardly;fo1dfed uSsetftype sides, 'a v, flattened tubular "spout portion, connected with said lining and having its longitudinal axis disposed atjright-"angles to one side of the lining below the topedgethereof,

"said spout having its inner end' opening into the spaceformed by the lining and havingfits outer end initially projecting beyond the limits of the outer casing, whereby, to close said inner lining said outer end'of 'thespout maybe'folded transversely inwardly uponitself and then folded :obliquely inwardly' uponthe first mentioned fold to provide an inner seal whose outer folded edg e is disposed at a substantially i5 angle within the included angle formed by the projectedplanes of the top and one side of the bag, and an outer sealing extension on the outer casing at the. end of the gusset-type side thereof adjacent the folded spout, said extension havin marginalgsealing flaps whose lower ends are cutin converging planes'which intersect each other at right angles below the top of the casing and at -the'fold'line of said gusset-type side with whichlthe extension is connected,- whereby the baseofzsaid ex:- tension may be swung inwardly along lines-defined by the aforesaid last mentioned planes to cover the inner seal formed by the folded spout and the flaps may be folded downwardly-and ad,- hesively connected to the'outer sides of thecasing to providean outer seal for the bag; 1 

